Greenwire headlines — Thursday, June 13, 2013 — 12:58 PM

SPOTLIGHT

The Supreme Court ruled today that Texas has no right to Oklahoma's water under a 1980 interstate compact in a case seen as having broad implications in the arid western United States. Justices unanimously held in Tarrant Regional Water District v. Herrmann that Oklahoma laws effectively limiting the ability of an out-of-state entity to tap its resources are not pre-empted by the Red River Compact.

The Supreme Court today shot down key provisions in the Port of Los Angeles' program for cleaning up air pollution. In a unanimous opinion, the justices said the port cannot require trucks to display placards and submit off-street parking plans as part of its 2007 Clean Truck Program. The court held that such provisions were pre-empted by a 1994 law that deregulated the trucking industry.